/* roulang page: index */
/* ===================== 设计变量层 ===================== */
:root{
  --brand:#1D5FD0;
  --brand-hover:#1550B8;
  --brand-soft:#EAF1FD;
  --amber:#FF7A2F;
  --ink:#0F1B2D;
  --text:#3C4A60;
  --muted:#7A879C;
  --line:#E5EBF3;
  --bg:#FFFFFF;
  --bg-alt:#F5F8FD;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(19,46,94,.05),0 8px 24px rgba(19,46,94,.06);
  --sh-hover:0 12px 32px rgba(19,46,94,.10);
  --sec-py:88px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media (max-width:639px){:root{--sec-py:52px}}

/* ===================== 基础 reset ===================== */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;padding:0;
  font-family:var(--font-cn);
  font-size:16px;line-height:1.8;font-weight:400;
  color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
a{color:var(--brand);text-decoration:none;transition:color .15s ease,background-color .15s ease,opacity .15s ease,box-shadow .2s ease,transform .2s ease}
a:hover{color:var(--brand-hover)}
img{display:block;max-width:100%;height:auto;border:0}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,textarea,select{font-family:inherit;font-size:16px;line-height:1.5}
strong{font-weight:700;color:var(--ink)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(29,95,208,.25);border-radius:6px}
.is-hidden{display:none !important}

/* ===================== 容器与栅格补偿 ===================== */
.grid-container{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:39px;padding-right:39px}
@media (max-width:1023px){.grid-container{padding-left:31px;padding-right:31px}}
@media (max-width:639px){.grid-container{padding-left:31px;padding-right:31px}}
.grid-x.grid-margin-x > .cell{margin-bottom:24px}

/* 字体层级 */
.h1,.hero-title{font-size:40px;line-height:1.25;font-weight:700;color:var(--ink);letter-spacing:0}
.h2,.sec-title{font-size:28px;line-height:1.35;font-weight:700;color:var(--ink);letter-spacing:0}
.h3,.card-title{font-size:19px;line-height:1.5;font-weight:700;color:var(--ink)}
.lead{font-size:17px;line-height:1.75;color:var(--text)}
.small-text{font-size:14px;line-height:1.7;color:var(--muted)}
.num{font-variant-numeric:tabular-nums}
@media (max-width:639px){
  .h1,.hero-title{font-size:28px;line-height:1.35}
  .h2,.sec-title{font-size:22px;line-height:1.4}
  .h3,.card-title{font-size:18px}
  .lead{font-size:16px}
}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(29,95,208,.20)}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(29,95,208,.26)}
.btn-primary:active{background:#1245A0;transform:translateY(0);box-shadow:0 4px 10px rgba(29,95,208,.22)}
.btn-primary:focus-visible{box-shadow:0 0 0 4px rgba(29,95,208,.25)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{color:var(--brand);border-color:#C9DAF5;background:var(--brand-soft)}
.btn-ghost:active{background:#DCE9FC}
.btn-ghost:focus-visible{box-shadow:0 0 0 4px rgba(29,95,208,.18)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{background:#F0F5FE;color:var(--brand-hover)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* 文字箭头链 */
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.text-link i{font-size:12px;transition:transform .2s ease}
.text-link:hover i{transform:translateX(4px)}

/* ===================== 徽章 / 胶囊 ===================== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1.6;
  background:var(--brand-soft);color:var(--brand);
}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--amber);display:inline-block}
.badge-amber{background:#FFF1E8;color:#C9560F}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.pill{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;color:var(--muted);background:var(--bg-alt);border:1px solid var(--line);
  transition:all .2s ease;
}
.pill:hover{color:var(--brand);border-color:#C9DAF5}
.pill.is-on{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ===================== 图片比例容器 ===================== */
.ratio{position:relative;display:block;overflow:hidden;border-radius:var(--r-img);background:var(--bg-alt)}
.ratio::before{content:"";display:block;width:100%}
.ratio-16-10::before{padding-top:62.5%}
.ratio-4-3::before{padding-top:75%}
.ratio > img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.ratio:hover > img{transform:scale(1.04)}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 18px rgba(19,46,94,.06)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:28px;height:28px;border-radius:9px;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;letter-spacing:.2px;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.2px}
.brand-badge{font-size:14px;color:var(--amber)}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--text);
}
.nav-link:hover{color:var(--brand)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-right{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.nav-search{
  display:flex;align-items:center;gap:8px;width:220px;height:38px;padding:0 14px;
  background:var(--bg-alt);border:1px solid transparent;border-radius:var(--r-pill);
  transition:border-color .2s ease,background-color .2s ease;
}
.nav-search:focus-within{border-color:#C9DAF5;background:#fff;box-shadow:0 0 0 4px rgba(29,95,208,.12)}
.nav-search i{font-size:13px;color:var(--muted)}
.nav-search input{
  flex:1 1 auto;width:100%;border:0;background:transparent;height:36px;
  font-size:14px;color:var(--ink);
}
.nav-search input::placeholder{color:var(--muted)}
.nav-search input:focus{outline:none;box-shadow:none}
.nav-divider{width:1px;height:22px;background:var(--line)}
.nav-login{font-size:15px;font-weight:500;color:var(--text)}
.nav-login:hover{color:var(--brand)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer{
  display:none;position:fixed;left:0;right:0;top:68px;bottom:0;z-index:55;
  background:rgba(15,27,45,.35);opacity:0;pointer-events:none;transition:opacity .2s ease;
}
.drawer.is-open{opacity:1;pointer-events:auto}
.drawer-inner{
  background:#fff;padding:20px 16px 32px;box-shadow:0 12px 32px rgba(19,46,94,.12);
  transform:translateY(-8px);transition:transform .22s ease;
}
.drawer.is-open .drawer-inner{transform:translateY(0)}
.drawer-links{display:flex;flex-direction:column;margin-bottom:16px}
.drawer-links a{
  display:block;padding:14px 4px;font-size:16px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-links a.is-active{color:var(--brand)}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:46px;padding:0 16px;margin-bottom:14px;
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-btn);
}
.drawer-search input{flex:1 1 auto;border:0;background:transparent;height:44px;color:var(--ink)}
.drawer-search input:focus{outline:none;box-shadow:none}
@media (max-width:767px){
  .nav-links,.nav-search,.nav-divider,.nav-login,.nav-right .btn{display:none}
  .nav-toggle{display:flex}
  .drawer{display:block}
}

/* ===================== Hero ===================== */
.hero{
  position:relative;overflow:hidden;background:var(--bg-alt);
  min-height:560px;display:flex;align-items:center;
  padding:64px 0 72px;
}
.hero::after{
  content:"";position:absolute;top:-140px;right:-120px;width:420px;height:420px;border-radius:50%;
  background:rgba(29,95,208,.06);pointer-events:none;
}
.hero .grid-x{position:relative;z-index:2}
.hero-copy{max-width:560px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);background:#fff;border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--ink);margin-bottom:18px;
}
.hero-eyebrow i{color:var(--amber);font-size:12px}
.hero-title{margin-bottom:16px}
.hero-sub{font-size:17px;line-height:1.75;color:var(--text);margin-bottom:28px;max-width:480px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:10px 22px}
.hero-metrics li{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--muted)}
.hero-metrics i{font-size:12px;color:var(--brand)}
.hero-media{position:relative}
.hero-media .ratio{border-radius:var(--r-img);box-shadow:var(--sh-card)}
.hero-info-card{
  position:absolute;left:18px;bottom:18px;background:#fff;border-radius:12px;
  box-shadow:0 12px 32px rgba(19,46,94,.10);padding:12px 16px;display:flex;flex-direction:column;gap:2px;
}
.hero-info-card .tag{font-size:12px;color:var(--muted);display:inline-flex;align-items:center;gap:6px}
.hero-info-card .tag i{color:var(--amber);font-size:10px}
.hero-info-card .value{font-size:20px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}
@media (max-width:1023px){
  .hero{min-height:0;padding:48px 0 56px}
  .hero-copy{max-width:none;margin-bottom:32px}
}
@media (max-width:639px){
  .hero-media .ratio{border-radius:12px}
  .hero-info-card{left:12px;bottom:12px;padding:10px 14px}
  .hero-info-card .value{font-size:17px}
}

/* ===================== 区块通用 ===================== */
.sec{padding:var(--sec-py) 0}
.sec-alt{background:var(--bg-alt)}
.sec-head{margin-bottom:36px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.sec-head .sec-sub{font-size:15px;color:var(--muted);max-width:620px;margin-top:8px}
.sec-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.sec-more i{font-size:12px;transition:transform .2s ease}
.sec-more:hover i{transform:translateX(4px)}

/* ===================== 服务能力 ===================== */
.svc-main{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);height:100%;
  transition:box-shadow .2s ease,transform .2s ease;
}
.svc-main:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
.svc-main .ratio{margin-bottom:20px}
.svc-main h3{margin-bottom:10px}
.svc-main p{font-size:15px;line-height:1.85;color:var(--text);margin-bottom:16px}
.svc-quad{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;height:100%}
.svc-mini{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px 20px;
  box-shadow:var(--sh-card);display:flex;flex-direction:column;gap:10px;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.svc-mini:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:#D6E4FA}
.svc-mini i{font-size:26px;color:var(--brand)}
.svc-mini h3{font-size:17px}
.svc-mini p{font-size:14px;line-height:1.7;color:var(--muted)}
@media (max-width:639px){.svc-quad{grid-template-columns:1fr;gap:16px}}

/* ===================== 数据横带 ===================== */
.stat-band{background:var(--brand);padding:52px 0}
.stat-band .grid-x{margin-bottom:0}
.stat-cell{
  position:relative;text-align:center;padding:8px 12px;
}
.stat-cell::after{content:"";position:absolute;right:0;top:12%;bottom:12%;width:1px;background:rgba(255,255,255,.18)}
.stat-cell:last-child::after{display:none}
.stat-num{font-size:40px;font-weight:700;color:#fff;line-height:1.2;font-variant-numeric:tabular-nums}
.stat-label{font-size:14px;color:rgba(255,255,255,.75);margin-top:6px}
@media (max-width:639px){
  .stat-band{padding:40px 0}
  .stat-num{font-size:30px}
  .stat-cell:nth-child(2)::after{display:none}
  .stat-cell:nth-child(4)::after{display:none}
}

/* 横带下方 CTA 触点 */
.cta-strip{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;
  box-shadow:var(--sh-card);margin-top:-1px;
}
.cta-strip h3{font-size:19px;margin-bottom:4px}
.cta-strip p{font-size:14px;color:var(--muted)}
.cta-wrap{padding-top:32px;padding-bottom:0}

/* ===================== 案例卡 ===================== */
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);height:100%;display:flex;flex-direction:column;
  transition:box-shadow .2s ease,transform .2s ease;
}
.case-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
.case-media{position:relative;border-radius:0}
.case-media .case-badge{
  position:absolute;left:14px;top:14px;z-index:3;
  background:rgba(255,255,255,.9);color:var(--brand);
  font-size:12px;font-weight:600;padding:3px 10px;border-radius:var(--r-pill);
}
.case-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.case-body h3{transition:color .2s ease}
.case-card:hover .case-body h3{color:var(--brand)}
.case-body p{font-size:14px;line-height:1.75;color:var(--muted);flex:1 1 auto}
.case-card-wide .case-media::before{padding-top:52%}

/* ===================== 解决方案 ===================== */
.solu-row{align-items:center}
.solu-media .ratio{box-shadow:var(--sh-card)}
.solu-text h3{font-size:22px;margin-bottom:12px}
.solu-text p{font-size:15px;line-height:1.85;color:var(--text);margin-bottom:18px}
.solu-points{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.solu-points li{display:flex;gap:10px;font-size:15px;color:var(--text)}
.solu-points i{color:var(--brand);font-size:13px;margin-top:7px}

/* ===================== 资讯板块 ===================== */
.news-lead{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);height:100%;
  transition:box-shadow .2s ease,transform .2s ease;
}
.news-lead:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
.news-lead .ratio{border-radius:0}
.news-lead-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.news-lead-body h3{font-size:20px;transition:color .2s ease}
.news-lead:hover .news-lead-body h3{color:var(--brand)}
.news-lead-body p{font-size:14px;line-height:1.8;color:var(--muted);flex:1 1 auto}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.news-list{display:flex;flex-direction:column}
.news-row{
  display:flex;align-items:center;gap:14px;padding:16px 2px;border-bottom:1px solid var(--line);
  transition:background-color .18s ease;
}
.news-row:first-child{border-top:1px solid var(--line)}
.news-row:hover{background:#FAFCFF}
.news-time{flex:0 0 96px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.news-row-title{flex:1 1 auto;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6}
.news-row-title:hover{color:var(--brand)}
.news-tag{
  flex:0 0 auto;font-size:12px;font-weight:600;color:var(--brand);background:var(--brand-soft);
  padding:2px 9px;border-radius:var(--r-pill);
}
@media (max-width:639px){
  .news-row{flex-wrap:wrap;gap:6px 12px}
  .news-time{flex:0 0 auto}
  .news-row-title{flex:1 1 100%;font-size:15px;order:3}
}

/* 空态 */
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px;
}
.empty-state i{font-size:48px;color:#C3CFE1;line-height:1}
.empty-state p{font-size:15px;color:var(--muted)}
.empty-state a{font-size:14px;font-weight:600;color:var(--brand)}

/* 资讯板块下方 CTA */
.cta-band{
  margin-top:40px;background:var(--ink);border-radius:var(--r-card);
  padding:34px 36px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h3{color:#fff;font-size:21px;margin-bottom:6px}
.cta-band p{color:rgba(255,255,255,.72);font-size:14px}

/* ===================== FAQ ===================== */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-wrap .accordion{background:transparent;border:0;margin:0}
.faq-wrap .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;
  box-shadow:0 1px 2px rgba(19,46,94,.04);overflow:hidden;
}
.faq-wrap .accordion-title{
  position:relative;display:block;padding:18px 60px 18px 22px;border:0;background:#fff;
  font-size:17px;font-weight:700;color:var(--ink);line-height:1.6;transition:color .2s ease,background-color .2s ease;
}
.faq-wrap .accordion-title:hover{color:var(--brand);background:#FAFCFF}
.faq-wrap .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:8px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:11px;
  transition:transform .2s ease,background-color .2s ease,color .2s ease;
}
.faq-wrap .accordion-title.is-active{color:var(--brand)}
.faq-wrap .accordion-title.is-active::before{
  content:"\f068";background:var(--brand);color:#fff;transform:translateY(-50%) rotate(180deg);
}
.faq-wrap .accordion-title.is-active::after{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--brand);
}
.faq-wrap .accordion-content{
  border:0;padding:0 22px 20px 22px;background:#fff;
  font-size:15px;line-height:1.85;color:var(--text);
}

/* ===================== 表单 ===================== */
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-card);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--ink);transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.75}
.field input::placeholder,.field textarea::placeholder{color:var(--muted)}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(29,95,208,.12);
}
.form-note{font-size:13px;color:var(--muted);margin-top:12px}
.contact-side{display:flex;flex-direction:column;gap:18px}
.contact-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
  display:flex;gap:14px;box-shadow:var(--sh-card);transition:box-shadow .2s ease,transform .2s ease;
}
.contact-item:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
.contact-item i{font-size:20px;color:var(--brand);margin-top:4px}
.contact-item h3{font-size:16px;margin-bottom:4px}
.contact-item p{font-size:14px;color:var(--muted);line-height:1.75}
@media (max-width:639px){.contact-card{padding:22px}.btn-form{width:100%}}
@media (min-width:640px){.btn-form{width:180px}}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-brand-box{display:flex;flex-direction:column;gap:14px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff}
.footer-brand .brand-mark{background:#fff;color:var(--brand)}
.footer-brand span.txt{font-size:17px;font-weight:700}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:18px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff;opacity:1}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.72);line-height:1.8}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.55)}
.footer-bottom a:hover{color:#fff}
.footer-links{display:flex;gap:18px;flex-wrap:wrap}

/* ===================== 动效可访问性 ===================== */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .ratio:hover > img{transform:none}
}

/* roulang page: article */
:root{
  --brand:#1D5FD0;
  --brand-hover:#1550B8;
  --brand-soft:#EAF1FD;
  --accent:#FF7A2F;
  --ink:#0F1B2D;
  --text:#3C4A60;
  --muted:#7A879C;
  --line:#E5EBF3;
  --white:#FFFFFF;
  --bg-alt:#F5F8FD;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(19,46,94,.05), 0 8px 24px rgba(19,46,94,.06);
  --sh-hover:0 12px 32px rgba(19,46,94,.10);
  --container:1200px;
  --side:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .15s ease,opacity .15s ease;}
a:hover{color:var(--brand-hover);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3;}
p{margin:0;}
button{font:inherit;cursor:pointer;}
input,textarea,select{font:inherit;}
:focus-visible{outline:2px solid rgba(29,95,208,.35);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-soft);color:var(--brand-hover);}
.grid-container{max-width:var(--container);margin-left:auto;margin-right:auto;padding-left:var(--side);padding-right:var(--side);}
.grid-x{margin-left:-10px;margin-right:-10px;}
.grid-x>.cell{padding-left:10px;padding-right:10px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 按钮 / 徽章 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;line-height:1.2;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(29,95,208,.22);}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(29,95,208,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(29,95,208,.24);}
.btn-outline{background:#fff;color:var(--brand);border-color:#C9DCF8;}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-hover);border-color:var(--brand);}
.btn-outline:active{background:#DCE9FB;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);
  font-size:12.5px;font-weight:600;line-height:1.4;
}
.badge-accent{background:rgba(255,122,47,.12);color:#D95F17;}
.tag{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:var(--r-pill);
  background:var(--bg-alt);color:var(--text);font-size:13px;border:1px solid var(--line);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.tag:hover{background:var(--brand-soft);color:var(--brand);border-color:#C9DCF8;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
.text-link i{font-size:12px;transition:transform .2s ease;}
.text-link:hover{color:var(--brand-hover);}
.text-link:hover i{transform:translateX(3px);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(19,46,94,.07);}
.nav-inner{display:flex;align-items:center;gap:22px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;letter-spacing:0;
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.brand-icon{font-size:16px;color:var(--brand);}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;}
.nav-link{
  position:relative;padding:8px 12px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--text);
  transition:color .15s ease,background-color .15s ease;
}
.nav-link:hover{color:var(--brand);background:var(--bg-alt);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  border-radius:2px;background:var(--brand);
}
.nav-tools{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.nav-search{position:relative;}
.nav-search i{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:13px;}
.nav-search input{
  width:220px;height:40px;border-radius:var(--r-pill);
  border:1px solid transparent;background:var(--bg-alt);
  padding:0 14px 0 34px;font-size:14px;color:var(--ink);
  transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.nav-search input::placeholder{color:var(--muted);}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,95,208,.12);}
.nav-divider{width:1px;height:22px;background:var(--line);}
.nav-login{font-size:15px;font-weight:500;color:var(--text);}
.nav-login:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);align-items:center;justify-content:center;font-size:16px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
.mobile-menu{
  display:none;position:absolute;left:0;right:0;top:68px;background:#fff;
  border-top:1px solid var(--line);box-shadow:0 18px 30px rgba(19,46,94,.10);
  padding:16px 0 22px;
}
.mobile-menu.is-open{display:block;}
.mobile-menu .grid-container{display:flex;flex-direction:column;gap:8px;}
.mobile-menu .nav-link{padding:12px 14px;font-size:16px;background:var(--bg-alt);border-radius:10px;}
.mobile-menu .nav-link.is-active{background:var(--brand-soft);}
.mobile-menu .nav-link.is-active::after{display:none;}
.mobile-search{position:relative;margin-top:6px;}
.mobile-search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:13px;}
.mobile-search input{
  width:100%;height:46px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:var(--bg-alt);padding:0 14px 0 36px;font-size:15px;color:var(--ink);
}
.mobile-search input:focus{outline:none;background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,95,208,.12);}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--bg-alt);border-bottom:1px solid var(--line);}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:14px 0;font-size:13px;color:var(--muted);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C3CDDC;}
.crumb .current{color:var(--ink);font-weight:500;max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章布局 ---------- */
.post-area{padding:48px 0 72px;background:#fff;}
.post-main{max-width:760px;}
.post-head{margin-bottom:26px;}
.post-head .badge{margin-bottom:16px;}
.post-title{font-size:34px;line-height:1.35;letter-spacing:.2px;margin-bottom:18px;}
.post-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px 16px;font-size:13.5px;color:var(--muted);}
.post-meta span{display:inline-flex;align-items:center;gap:6px;}
.post-meta i{font-size:13px;color:#9AA7BA;}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:#C9D3E1;display:inline-block;}
.ratio-16-10{position:relative;width:100%;aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;background:var(--bg-alt);}
.ratio-16-10 img{width:100%;height:100%;object-fit:cover;}
.post-cover{margin:0 0 34px;}
.post-cover figcaption{font-size:13px;color:var(--muted);margin-top:10px;text-align:center;}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--text);}
.article-body>*+*{margin-top:20px;}
.article-body p{font-size:17px;line-height:1.9;color:var(--text);}
.article-body h2{
  position:relative;font-size:24px;line-height:1.45;color:var(--ink);
  padding-left:14px;margin-top:44px;margin-bottom:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:19px;color:var(--ink);margin-top:30px;margin-bottom:12px;}
.article-body h4{font-size:17px;color:var(--ink);margin-top:24px;margin-bottom:10px;}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(29,95,208,.28);}
.article-body a:hover{color:var(--brand-hover);border-bottom-color:var(--brand-hover);}
.article-body strong{color:var(--ink);font-weight:600;}
.article-body img{border-radius:var(--r-img);margin:26px auto;width:100%;}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body blockquote{
  margin:26px 0;padding:20px 24px;background:var(--bg-alt);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;
  font-size:16px;color:var(--text);
}
.article-body blockquote p{margin:0;font-size:16px;}
.article-body ul,.article-body ol{margin:18px 0;padding-left:0;list-style:none;}
.article-body ul li,.article-body ol li{position:relative;padding-left:26px;margin-bottom:10px;font-size:16.5px;line-height:1.85;}
.article-body ul li::before{
  content:"";position:absolute;left:6px;top:12px;width:7px;height:7px;border-radius:50%;
  background:var(--brand);
}
.article-body ol{counter-reset:li;}
.article-body ol li{counter-increment:li;}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:4px;width:20px;height:20px;
  border-radius:6px;background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--bg-alt);color:var(--ink);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

/* ---------- 侧边栏 ---------- */
.sidebar{max-width:300px;margin-left:auto;}
.sidebar-sticky{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-card);
}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--brand);font-size:14px;}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;padding:8px 10px;border-radius:8px;font-size:14px;color:var(--text);
  border-left:3px solid transparent;line-height:1.55;
  transition:background-color .15s ease,color .15s ease,border-color .15s ease;
}
.toc-list a:hover{background:var(--bg-alt);color:var(--brand);border-left-color:var(--brand);}
.side-list{list-style:none;margin:0;padding:0;}
.side-list li{padding:12px 0;border-bottom:1px dashed var(--line);}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list a{font-size:14.5px;font-weight:500;color:var(--ink);line-height:1.6;display:block;}
.side-list a:hover{color:var(--brand);}
.side-list .meta{display:block;font-size:12.5px;color:var(--muted);margin-top:6px;}
.side-cta{
  background:linear-gradient(160deg,#1D5FD0 0%,#154CA8 100%);
  border:0;color:#fff;text-align:left;
}
.side-cta h3{color:#fff;}
.side-cta h3 i{color:rgba(255,255,255,.85);}
.side-cta p{font-size:14px;color:rgba(255,255,255,.82);line-height:1.7;margin-bottom:16px;}
.side-cta .btn{background:#fff;color:var(--brand);box-shadow:none;}
.side-cta .btn:hover{background:#F2F6FE;color:var(--brand-hover);}

/* ---------- 标签 / 上下篇 / 相关推荐 ---------- */
.post-footer{margin-top:40px;padding-top:26px;border-top:1px solid var(--line);}
.tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.tag-row .label{font-size:13.5px;color:var(--muted);}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:24px;}
.pager-item{
  display:block;background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;transition:background-color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.pager-item:hover{background:#fff;border-color:#C9DCF8;transform:translateY(-2px);box-shadow:var(--sh-hover);}
.pager-item .k{font-size:12.5px;color:var(--muted);display:block;margin-bottom:6px;}
.pager-item .t{font-size:15px;font-weight:600;color:var(--ink);line-height:1.6;}
.pager-item:hover .t{color:var(--brand);}
.pager-item.next{text-align:right;}
.back-row{display:flex;justify-content:center;margin-bottom:8px;}
.related{margin-top:56px;}
.related h2{font-size:22px;margin-bottom:20px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.mini-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#D8E4F6;}
.mini-card .thumb{position:relative;width:100%;aspect-ratio:4/3;overflow:hidden;background:var(--bg-alt);}
.mini-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease;}
.mini-card:hover .thumb img{transform:scale(1.04);}
.mini-card .body{padding:16px 18px 20px;}
.mini-card .t{font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.6;margin-bottom:8px;}
.mini-card:hover .t{color:var(--brand);}
.mini-card .m{font-size:12.5px;color:var(--muted);}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:64px 24px;background:var(--bg-alt);
  border:1px dashed #CFDCEE;border-radius:var(--r-card);
}
.empty-state i{font-size:48px;color:#B7C5D9;display:block;margin-bottom:16px;}
.empty-state p{font-size:16px;color:var(--muted);margin-bottom:20px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0;}
.footer-brand-box{margin-bottom:20px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:var(--brand);}
.footer-brand .txt{font-size:18px;font-weight:700;color:#fff;}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);margin-bottom:16px;max-width:320px;}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:16px;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col li{font-size:13.5px;color:rgba(255,255,255,.68);line-height:1.7;}
.footer-col a:hover{color:#fff;opacity:1;}
.footer-contact li{color:rgba(255,255,255,.68);}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-links{display:flex;flex-wrap:wrap;gap:16px;}
.footer-links a{color:rgba(255,255,255,.6);}
.footer-links a:hover{color:#fff;}

/* ---------- 动效与响应式 ---------- */
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}
@media screen and (max-width:1279px){
  .post-title{font-size:30px;}
}
@media screen and (max-width:1024px){
  .post-main{max-width:100%;}
  .sidebar{max-width:100%;margin-top:40px;}
  .sidebar-sticky{position:static;flex-direction:column;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
}
@media screen and (max-width:768px){
  :root{--side:16px;}
  .nav-links,.nav-search,.nav-divider,.nav-login{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{gap:12px;justify-content:space-between;}
  .nav-tools .btn{display:none;}
  .post-area{padding:32px 0 56px;}
  .post-title{font-size:26px;line-height:1.4;}
  .article-body,.article-body p{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:21px;margin-top:34px;}
  .article-body h3{font-size:18px;}
  .related-grid{grid-template-columns:1fr;}
  .related h2{font-size:19px;}
  .pager{grid-template-columns:1fr;}
  .pager-item.next{text-align:left;}
  .site-footer{padding-top:48px;}
  .footer-bottom{margin-top:36px;}
}
@media screen and (max-width:520px){
  .post-meta{gap:8px 12px;font-size:13px;}
  .post-title{font-size:23px;}
  .crumb .current{max-width:100%;white-space:normal;}
  .grid-x{margin-left:0;margin-right:0;}
  .grid-x>.cell{padding-left:0;padding-right:0;}
  .mini-card .body{padding:14px 16px 18px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#1D5FD0;
  --c-primary-dark:#1550B8;
  --c-primary-soft:#EAF1FD;
  --c-accent:#FF7A2F;
  --c-title:#0F1B2D;
  --c-text:#3C4A60;
  --c-muted:#7A879C;
  --c-line:#E5EBF3;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FD;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --r-img:14px;
  --sh-card:0 1px 2px rgba(19,46,94,.05), 0 8px 24px rgba(19,46,94,.06);
  --sh-hover:0 12px 32px rgba(19,46,94,.10);
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --sp-section:88px;
  --sp-section-m:52px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  font-feature-settings:"tnum";
}
h1,h2,h3,h4{margin:0;color:var(--c-title);font-weight:700;font-style:normal;letter-spacing:0;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:28px;line-height:1.35;}
h3{font-size:19px;line-height:1.5;}
p{margin:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .15s ease,opacity .15s ease;}
a:hover{color:var(--c-primary-dark);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(29,95,208,.25);border-radius:8px;}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
.button,a.button,button.button{font-family:var(--font-sans);}
.button{background:none;border:0;border-radius:var(--r-btn);}
/* 通用按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:all .2s ease;white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(29,95,208,.20);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(29,95,208,.26);}
.btn-primary:active{transform:translateY(0);background:var(--c-primary-dark);}
.btn-ghost{background:#fff;color:var(--c-title);border-color:var(--c-line);}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);background:#fff;}
.btn-ghost:active{background:var(--c-primary-soft);}
.btn-light{background:#fff;color:var(--c-primary);}
.btn-light:hover{background:#F2F6FF;color:var(--c-primary-dark);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn:disabled,.btn.is-disabled{background:var(--c-line);color:var(--c-muted);box-shadow:none;cursor:not-allowed;transform:none;}
.btn-block{width:100%;}
/* 文本链 */
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);}
.text-link i{font-size:12px;transition:transform .2s ease;}
.text-link:hover i{transform:translateX(3px);}
/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:600;letter-spacing:0;
}
.badge-accent{background:rgba(255,122,47,.12);color:#C9541A;}
.badge-glass{background:rgba(255,255,255,.86);color:var(--c-primary);}
.dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:inline-block;}
/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  transition:box-shadow .2s ease,border-color .2s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{border-bottom:1px solid var(--c-line);box-shadow:0 6px 18px rgba(19,46,94,.06);}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-title);}
.brand:hover{color:var(--c-title);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;line-height:1;
}
.brand-text{font-size:18px;font-weight:700;color:var(--c-title);}
.brand-spark{color:var(--c-accent);font-size:14px;}
.nav-links{display:flex;align-items:center;gap:6px;flex:1 1 auto;}
.nav-link{
  position:relative;display:inline-block;padding:10px 12px;
  font-size:15px;color:var(--c-text);font-weight:500;border-radius:8px;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-bg-alt);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 14px;
  background:var(--c-bg-alt);border:1px solid transparent;
  border-radius:var(--r-pill);transition:border-color .2s ease,background .2s ease;
}
.search-box:focus-within{background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,95,208,.12);}
.search-box i{color:var(--c-muted);font-size:14px;}
.search-box input{
  flex:1;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--c-title);height:100%;margin:0;
}
.search-box input::placeholder{color:var(--c-muted);}
.header-divider{width:1px;height:22px;background:var(--c-line);}
.login-link{font-size:14px;color:var(--c-text);font-weight:500;}
.login-link:hover{color:var(--c-primary);}
.hamburger{
  display:none;width:42px;height:42px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:#fff;color:var(--c-title);
  align-items:center;justify-content:center;font-size:16px;cursor:pointer;
}
.hamburger:hover{border-color:var(--c-primary);color:var(--c-primary);}
/* 移动抽屉 */
.mobile-drawer{
  display:none;position:fixed;inset:68px 0 0 0;z-index:55;
  background:#fff;padding:20px 16px 32px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .search-box{width:100%;margin-bottom:16px;}
.mobile-drawer .nav-link{display:block;padding:14px 12px;font-size:16px;border-bottom:1px solid var(--c-line);border-radius:0;}
.mobile-drawer .nav-link.is-active::after{display:none;}
.mobile-drawer .btn{width:100%;margin-top:18px;}
/* 面包屑 */
.breadcrumb-wrap{background:var(--c-bg-alt);border-bottom:1px solid var(--c-line);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13px;color:var(--c-muted);}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C3CCDA;}
.breadcrumb .now{color:var(--c-text);}
/* 主体布局 */
.page-main{padding:48px 0 0;background:#fff;}
.layout-row{align-items:flex-start;}
.sidebar{position:sticky;top:92px;}
.side-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:20px;margin-bottom:20px;
}
.side-card h3{font-size:16px;margin-bottom:12px;}
.cat-list li{margin-bottom:4px;}
.cat-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:10px;font-size:15px;color:var(--c-text);
  border-left:3px solid transparent;transition:all .2s ease;
}
.cat-list a:hover{background:var(--c-bg-alt);color:var(--c-primary);}
.cat-list a.is-current{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary);}
.cat-list a .cnt{font-size:12px;color:var(--c-muted);}
.side-note{font-size:14px;line-height:1.7;color:var(--c-muted);margin-bottom:14px;}
.side-mini{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-muted);margin-top:12px;}
.side-mini i{color:var(--c-primary);}
/* 内容头 */
.content-head{margin-bottom:32px;}
.content-head h1{margin:12px 0 14px;}
.lead{font-size:16px;line-height:1.85;color:var(--c-text);max-width:760px;}
.head-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
/* 卡片网格 */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.card{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#D8E3F5;}
.thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-alt);border-radius:0;}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .thumb img{transform:scale(1.04);}
.thumb-badge{position:absolute;left:14px;top:14px;}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:19px;}
.card-text{font-size:14px;line-height:1.75;color:var(--c-text);}
.card-foot{margin-top:auto;padding-top:6px;}
/* 区块通用 */
.section{padding:var(--sp-section) 0;}
.section-alt{background:var(--c-bg-alt);}
.section-head{margin-bottom:36px;max-width:760px;}
.section-head h2{margin-bottom:12px;}
.section-sub{font-size:15px;color:var(--c-muted);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);margin-bottom:10px;}
/* 场景区 */
.scene-row{align-items:center;}
.scene-list{display:flex;flex-direction:column;gap:16px;margin-top:22px;}
.scene-item{
  display:flex;gap:14px;padding:16px 18px;background:#fff;
  border:1px solid var(--c-line);border-radius:12px;box-shadow:var(--sh-card);
}
.scene-item i{color:var(--c-primary);font-size:18px;margin-top:4px;}
.scene-item h3{font-size:16px;margin-bottom:4px;}
.scene-item p{font-size:14px;color:var(--c-text);line-height:1.7;}
.figure{position:relative;aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;background:var(--c-bg-alt);box-shadow:var(--sh-card);}
.figure img{width:100%;height:100%;object-fit:cover;}
.figure-card{
  position:absolute;left:16px;bottom:16px;background:#fff;border-radius:12px;
  padding:12px 16px;box-shadow:0 12px 32px rgba(19,46,94,.10);
}
.figure-card .lbl{font-size:12px;color:var(--c-muted);}
.figure-card .num{font-size:20px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;}
/* 流程 */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.flow-step{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-card);transition:transform .2s ease,box-shadow .2s ease;
}
.flow-step:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.flow-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;background:var(--c-primary-soft);
  color:var(--c-primary);font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
  margin-bottom:12px;
}
.flow-step h3{font-size:17px;margin-bottom:6px;}
.flow-step p{font-size:14px;line-height:1.7;color:var(--c-text);}
/* 保障横条 */
.assure{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  background:var(--c-primary);border-radius:var(--r-card);overflow:hidden;
}
.assure-item{padding:30px 24px;border-right:1px solid rgba(255,255,255,.18);}
.assure-item:last-child{border-right:0;}
.assure-item .num{font-size:36px;font-weight:700;color:#fff;line-height:1.2;font-variant-numeric:tabular-nums;}
.assure-item .lbl{font-size:14px;color:rgba(255,255,255,.78);margin-top:6px;}
/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion{background:transparent;border:0;margin:0;}
.accordion .accordion-item{
  background:#fff;border:1px solid var(--c-line);border-radius:12px;
  box-shadow:var(--sh-card);margin-bottom:12px;overflow:hidden;transition:box-shadow .2s ease;
}
.accordion .accordion-item:hover{box-shadow:var(--sh-hover);}
.accordion .accordion-title{
  position:relative;border:0;padding:18px 60px 18px 22px;
  font-size:17px;font-weight:600;color:var(--c-title);
  transition:color .2s ease;
}
.accordion .accordion-title::before{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;line-height:26px;text-align:center;
  border-radius:8px;background:var(--c-primary-soft);color:var(--c-primary);
  font-size:18px;font-weight:600;font-family:var(--font-sans);
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.accordion .accordion-item.is-active > .accordion-title{color:var(--c-primary);}
.accordion .accordion-item.is-active > .accordion-title::after{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.accordion .accordion-item.is-active > .accordion-title::before{
  content:"−";background:var(--c-primary);color:#fff;transform:translateY(-50%) rotate(180deg);
}
.accordion .accordion-content{
  border:0;background:#fff;padding:0 22px 20px;
  font-size:15px;line-height:1.85;color:var(--c-text);
}
.accordion .accordion-content p{color:var(--c-text);}
/* CTA 横带 */
.cta-band{background:var(--c-primary);border-radius:var(--r-card);padding:44px;color:#fff;overflow:hidden;position:relative;}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-80px;width:280px;height:280px;
  border-radius:50%;background:rgba(255,255,255,.06);
}
.cta-band h2{color:#fff;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.cta-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:22px;font-size:14px;color:rgba(255,255,255,.8);}
.cta-meta span{display:inline-flex;align-items:center;gap:8px;}
.cta-meta i{color:#fff;}
/* 表单 */
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:26px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-title);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--c-line);
  border-radius:var(--r-input);background:#fff;color:var(--c-title);font-size:15px;
  outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:110px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--c-muted);}
.field input:focus,.field textarea:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,95,208,.12);}
.form-tip{font-size:13px;color:var(--c-muted);margin-top:12px;line-height:1.7;}
/* 页脚 */
.site-footer{background:var(--c-title);color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:0;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--c-primary);}
.footer-brand .txt{font-size:18px;font-weight:700;color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:340px;margin-bottom:16px;}
.site-footer .text-link{color:#fff;}
.site-footer .text-link:hover{color:#fff;opacity:.8;}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col ul li a:hover{color:#fff;opacity:.95;}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.72);line-height:1.9;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-links a{font-size:13px;color:rgba(255,255,255,.6);}
.footer-links a:hover{color:#fff;}
/* 动效 */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}
/* 断点 */
@media screen and (max-width:1023px){
  h1{font-size:32px;}
  h2{font-size:24px;}
  .nav-links,.header-actions .search-box,.header-actions .header-divider,.header-actions .login-link{display:none;}
  .hamburger{display:inline-flex;}
  .sidebar{position:static;margin-bottom:32px;}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));}
  .assure{grid-template-columns:repeat(2,minmax(0,1fr));}
  .assure-item:nth-child(2){border-right:0;}
  .assure-item:nth-child(1),.assure-item:nth-child(2){border-bottom:1px solid rgba(255,255,255,.18);}
  .section{padding:64px 0;}
}
@media screen and (max-width:639px){
  h1{font-size:28px;line-height:1.35;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .flow{grid-template-columns:minmax(0,1fr);}
  .assure{grid-template-columns:repeat(2,minmax(0,1fr));}
  .assure-item{padding:22px 16px;}
  .assure-item .num{font-size:28px;}
  .card-body{padding:18px;}
  .cta-band{padding:28px 20px;}
  .section{padding:48px 0;}
  .page-main{padding-top:32px;}
}

/* roulang page: category2 */
/* ============================================================
   设计变量
   ============================================================ */
:root{
  --brand:#1D5FD0;
  --brand-dark:#1550B8;
  --brand-soft:#EAF1FD;
  --accent:#FF7A2F;
  --ink:#0F1B2D;
  --text:#3C4A60;
  --muted:#7A879C;
  --line:#E5EBF3;
  --bg:#FFFFFF;
  --bg-alt:#F5F8FD;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(19,46,94,.05), 0 8px 24px rgba(19,46,94,.06);
  --sh-2:0 12px 32px rgba(19,46,94,.10);
  --sec-y:96px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

/* ============================================================
   reset / base
   ============================================================ */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; }
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  font-weight:400;
  letter-spacing:0;
  font-variant-numeric:tabular-nums;
}
img{ max-width:100%; display:block; border:0; }
a{ color:var(--brand); text-decoration:none; transition:color .15s ease,opacity .15s ease; }
a:hover{ color:var(--brand-dark); }
h1,h2,h3,h4,h5,h6{
  margin:0 0 16px;
  color:var(--ink);
  font-weight:700;
  line-height:1.35;
  font-family:var(--font-cn);
}
p{ margin:0 0 16px; }
p:last-child{ margin-bottom:0; }
ul,ol{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; }
input,textarea,select{ font-family:inherit; font-size:inherit; }
strong{ font-weight:700; color:var(--ink); }
i{ font-style:normal; }
:focus{ outline:none; }
:focus-visible{ outline:none; box-shadow:0 0 0 3px rgba(29,95,208,.25); border-radius:8px; }

.grid-container{
  max-width:1200px;
  margin-left:auto;
  margin-right:auto;
  padding-left:24px;
  padding-right:24px;
}
.grid-x{ display:flex; flex-flow:row wrap; }
.cell{ min-width:0; }

/* 通用图片比例容器 */
.ratio-box{
  position:relative;
  width:100%;
  overflow:hidden;
  border-radius:var(--r-img);
  background:var(--bg-alt);
}
.ratio-box > img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.ratio-16-10{ aspect-ratio:16/10; }
.ratio-4-3{ aspect-ratio:4/3; }

/* ============================================================
   按钮
   ============================================================ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn i{ font-size:13px; }
.btn-primary{ background:var(--brand); color:#fff; box-shadow:0 6px 16px rgba(29,95,208,.20); }
.btn-primary:hover{ background:var(--brand-dark); color:#fff; box-shadow:0 10px 24px rgba(29,95,208,.26); transform:translateY(-2px); }
.btn-primary:active{ background:var(--brand-dark); transform:translateY(0); box-shadow:0 4px 12px rgba(29,95,208,.22); }
.btn-primary:focus-visible{ box-shadow:0 0 0 3px rgba(29,95,208,.25); }
.btn-ghost{ background:#fff; color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ color:var(--brand); border-color:var(--brand); background:var(--brand-soft); }
.btn-ghost:active{ background:var(--brand-soft); border-color:var(--brand-dark); }
.btn-white{ background:#fff; color:var(--brand); }
.btn-white:hover{ background:#fff; color:var(--brand-dark); box-shadow:0 10px 24px rgba(15,27,45,.20); transform:translateY(-2px); }
.btn-sm{ height:40px; padding:0 18px; font-size:14px; border-radius:var(--r-btn); }
.btn-block{ width:100%; }

/* ============================================================
   徽章 / 标签 / 胶囊
   ============================================================ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:var(--brand-soft);
  color:var(--brand);
  font-size:12.5px;
  font-weight:600;
  line-height:1.5;
}
.badge-accent{
  background:rgba(255,122,47,.12);
  color:#C4520F;
}
.badge-dot::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
  display:inline-block;
}

/* ============================================================
   导航
   ============================================================ */
.skip-link{
  position:absolute;
  left:-9999px;
  top:0;
  background:var(--brand);
  color:#fff;
  padding:10px 16px;
  border-radius:0 0 10px 0;
  z-index:200;
}
.skip-link:focus{ left:0; color:#fff; }

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 18px rgba(19,46,94,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:12px;
  height:68px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
}
.brand:hover{ color:var(--ink); }
.brand-mark{
  width:28px;
  height:28px;
  border-radius:9px;
  background:var(--brand);
  color:#fff;
  font-size:13px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  letter-spacing:.5px;
}
.brand-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:.2px;
}
.brand-glyph{
  font-size:14px;
  color:var(--brand);
  opacity:.75;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:14px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px 12px;
  font-size:15px;
  color:var(--text);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:4px;
  height:2px;
  border-radius:2px;
  background:transparent;
  transition:background-color .18s ease;
}
.nav-link:hover{ color:var(--brand); }
.nav-link:focus-visible{ box-shadow:0 0 0 3px rgba(29,95,208,.25); }
.nav-link.is-active{ color:var(--brand); font-weight:600; }
.nav-link.is-active::after{ background:var(--brand); }

.header-right{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:14px;
  flex:0 0 auto;
}
.nav-search{
  position:relative;
  width:220px;
  margin:0;
}
.nav-search input{
  width:100%;
  height:40px;
  margin:0;
  padding:0 14px 0 38px;
  border:1px solid transparent;
  border-radius:var(--r-pill);
  background:var(--bg-alt);
  font-size:14px;
  color:var(--ink);
  transition:border-color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.nav-search input::placeholder{ color:var(--muted); }
.nav-search input:focus{
  border-color:var(--brand);
  background:#fff;
  box-shadow:0 0 0 3px rgba(29,95,208,.14);
}
.nav-search .search-icon{
  position:absolute;
  left:14px;
  top:50%;
  transform:translateY(-50%);
  font-size:13px;
  color:var(--muted);
  pointer-events:none;
}
.nav-divider{
  width:1px;
  height:22px;
  background:var(--line);
}
.nav-login{
  font-size:14px;
  color:var(--text);
  padding:6px 2px;
}
.nav-login:hover{ color:var(--brand); }
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  margin-left:auto;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--ink);
  font-size:16px;
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.nav-toggle:hover{ color:var(--brand); border-color:var(--brand); background:var(--brand-soft); }

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:16px 0 24px;
}
.mobile-drawer.is-open{ display:block; }
.mobile-drawer .drawer-nav{
  display:flex;
  flex-direction:column;
  gap:4px;
  margin-bottom:16px;
}
.mobile-drawer .drawer-nav a{
  display:block;
  padding:12px 14px;
  border-radius:10px;
  color:var(--text);
  font-size:15px;
  font-weight:500;
}
.mobile-drawer .drawer-nav a:hover{ background:var(--bg-alt); color:var(--brand); }
.mobile-drawer .drawer-nav a.is-active{ background:var(--brand-soft); color:var(--brand); font-weight:600; }
.mobile-drawer .drawer-search{ margin-bottom:14px; }
.mobile-drawer .drawer-search input{
  width:100%;
  height:46px;
  margin:0;
  padding:0 14px 0 40px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:var(--bg-alt);
  font-size:15px;
}
.mobile-drawer .drawer-search input:focus{ border-color:var(--brand); background:#fff; box-shadow:0 0 0 3px rgba(29,95,208,.14); }

/* ============================================================
   页头横幅
   ============================================================ */
.page-banner{
  background:var(--bg-alt);
  padding:64px 0 72px;
  position:relative;
  overflow:hidden;
}
.page-banner::before{
  content:"";
  position:absolute;
  right:-120px;
  top:-140px;
  width:420px;
  height:420px;
  border-radius:50%;
  background:rgba(29,95,208,.055);
  pointer-events:none;
}
.breadcrumb{
  font-size:13px;
  color:var(--muted);
  margin-bottom:18px;
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
}
.breadcrumb a{ color:var(--muted); }
.breadcrumb a:hover{ color:var(--brand); }
.breadcrumb .sep{ color:#C7D1E0; }
.breadcrumb .current{ color:var(--text); }
.banner-title{
  font-size:40px;
  line-height:1.25;
  margin:0 0 18px;
  max-width:660px;
}
.banner-lead{
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  max-width:620px;
  margin-bottom:22px;
}
.banner-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.banner-figure{
  position:relative;
  margin:0;
}
.banner-figure .ratio-box{ box-shadow:var(--sh-1); }
.banner-card{
  position:absolute;
  left:18px;
  bottom:18px;
  background:#fff;
  border-radius:12px;
  padding:12px 16px;
  box-shadow:var(--sh-1);
  min-width:170px;
}
.banner-card .label{
  display:block;
  font-size:12.5px;
  color:var(--muted);
  margin-bottom:2px;
}
.banner-card .value{
  display:block;
  font-size:20px;
  font-weight:700;
  color:var(--ink);
  line-height:1.3;
}
.banner-card .value em{ color:var(--accent); font-style:normal; }

/* ============================================================
   板块通用
   ============================================================ */
.section{ padding:var(--sec-y) 0; }
.section-alt{ background:var(--bg-alt); }
.section-head{
  max-width:760px;
  margin:0 0 40px;
}
.section-title{
  font-size:28px;
  margin:0 0 12px;
  line-height:1.35;
}
.section-sub{
  font-size:15px;
  color:var(--muted);
  line-height:1.75;
  margin:0;
  max-width:620px;
}
.section-head-center{
  margin-left:auto;
  margin-right:auto;
  text-align:center;
}
.section-head-center .section-sub{ margin-left:auto; margin-right:auto; }

/* ============================================================
   图文交错
   ============================================================ */
.story-row{
  margin-left:-16px;
  margin-right:-16px;
  margin-bottom:72px;
  align-items:center;
}
.story-row:last-child{ margin-bottom:0; }
.story-row > .cell{
  padding-left:16px;
  padding-right:16px;
}
.story-figure{ margin:0; }
.story-figure .ratio-box{
  box-shadow:var(--sh-1);
  transition:box-shadow .25s ease,transform .25s ease;
}
.story-figure:hover .ratio-box{ box-shadow:var(--sh-2); transform:translateY(-3px); }
.story-figure:hover .ratio-box > img{ transform:scale(1.04); }
.story-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:11px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:14px;
  font-weight:700;
  margin-bottom:16px;
}
.story-h3{
  font-size:20px;
  line-height:1.45;
  margin:0 0 14px;
}
.story-desc{
  font-size:15px;
  line-height:1.85;
  color:var(--text);
  margin-bottom:18px;
}
.check-list{
  margin:0 0 20px;
}
.check-list li{
  position:relative;
  padding-left:28px;
  font-size:15px;
  line-height:1.8;
  color:var(--text);
  margin-bottom:10px;
}
.check-list li:last-child{ margin-bottom:0; }
.check-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  left:0;
  top:3px;
  width:18px;
  height:18px;
  border-radius:6px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:9px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--brand);
}
.text-link i{ font-size:12px; transition:transform .18s ease; }
.text-link:hover{ color:var(--brand-dark); }
.text-link:hover i{ transform:translateX(3px); }

/* ============================================================
   CTA 横带
   ============================================================ */
.cta-band{
  background:var(--brand);
  border-radius:var(--r-card);
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  box-shadow:0 16px 40px rgba(29,95,208,.18);
}
.cta-band h2{
  color:#fff;
  font-size:24px;
  margin:0 0 8px;
}
.cta-band p{
  color:rgba(255,255,255,.82);
  font-size:15px;
  margin:0;
  max-width:620px;
}
.cta-band .cta-action{ flex:0 0 auto; }

/* ============================================================
   FAQ
   ============================================================ */
.faq-wrap{ max-width:860px; margin:0 auto; }
.faq-accordion{
  border:none;
  background:transparent;
  margin:0;
}
.faq-accordion .accordion-item{
  border:none;
  border-left:3px solid transparent;
  background:#fff;
  border-radius:12px;
  box-shadow:var(--sh-1);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-accordion .accordion-item:hover{ box-shadow:var(--sh-2); }
.faq-accordion .accordion-item.is-active{ border-left-color:var(--brand); }
.faq-accordion .accordion-title{
  position:relative;
  border:none;
  background:#fff;
  padding:20px 62px 20px 22px;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  line-height:1.6;
  transition:color .2s ease,background-color .2s ease;
}
.faq-accordion .accordion-title::before{ display:none !important; }
.faq-accordion .accordion-title::after{
  content:"";
  position:absolute;
  right:20px;
  top:50%;
  width:26px;
  height:26px;
  margin-top:-13px;
  border-radius:8px;
  background-color:var(--brand-soft);
  background-image:linear-gradient(var(--brand),var(--brand)),linear-gradient(var(--brand),var(--brand));
  background-size:12px 2px,2px 12px;
  background-position:center center,center center;
  background-repeat:no-repeat;
  transition:background-size .2s ease,background-color .2s ease;
}
.faq-accordion .accordion-item.is-active .accordion-title::after{
  background-size:12px 2px,0 0;
}
.faq-accordion .accordion-title:hover{ color:var(--brand); background:#fff; }
.faq-accordion .accordion-item.is-active .accordion-title{ color:var(--brand); }
.faq-accordion .accordion-content{
  border:none;
  background:#fff;
  padding:0 62px 22px 22px;
  color:var(--text);
  font-size:15px;
  line-height:1.85;
}
.faq-accordion .accordion-content p{ margin:0; }

/* ============================================================
   表单（静态版式）
   ============================================================ */
.field-label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:8px;
}
.field-input{
  width:100%;
  height:48px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  font-size:15px;
  color:var(--ink);
  margin:0;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field-input::placeholder{ color:var(--muted); }
.field-input:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(29,95,208,.12);
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  background:#0F1B2D;
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
  font-size:14px;
  line-height:1.75;
}
.site-footer .grid-margin-x{ margin-left:-16px; margin-right:-16px; }
.site-footer .cell{ padding-left:16px; padding-right:16px; }
.footer-brand-box{ margin-bottom:24px; }
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#fff;
  margin-bottom:14px;
}
.footer-brand:hover{ color:#fff; }
.footer-brand .brand-mark{ background:var(--brand); }
.footer-brand .txt{ font-size:17px; font-weight:700; }
.footer-desc{
  color:rgba(255,255,255,.66);
  font-size:13.5px;
  line-height:1.8;
  max-width:320px;
  margin-bottom:14px;
}
.footer-col{ margin-bottom:24px; }
.footer-col h3{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin:0 0 16px;
}
.footer-col ul li{ margin-bottom:10px; }
.footer-col ul li a{
  color:rgba(255,255,255,.68);
  font-size:13.5px;
}
.footer-col ul li a:hover{ color:#fff; }
.footer-contact li{ color:rgba(255,255,255,.68); font-size:13.5px; }
.footer-bottom{
  margin-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.55);
}
.footer-links{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
}
.footer-links a{ color:rgba(255,255,255,.6); }
.footer-links a:hover{ color:#fff; }

/* ============================================================
   响应式
   ============================================================ */
@media screen and (max-width:1024px){
  :root{ --sec-y:72px; }
  .nav-search{ width:170px; }
  .nav-link{ padding:8px 9px 12px; font-size:14.5px; }
  .banner-title{ font-size:32px; }
  .story-row{ margin-bottom:56px; }
  .cta-band{ padding:36px 32px; }
}

@media screen and (max-width:768px){
  :root{ --sec-y:56px; }
  .grid-container{ padding-left:16px; padding-right:16px; }
  .nav-links,
  .nav-search,
  .nav-divider,
  .nav-login,
  .header-right .btn{ display:none; }
  .nav-toggle{ display:inline-flex; align-items:center; justify-content:center; }
  .banner-title{ font-size:28px; line-height:1.35; }
  .page-banner{ padding:40px 0 48px; }
  .banner-figure{ margin-top:28px; }
  .section-title{ font-size:22px; }
  .section-head{ margin-bottom:28px; }
  .story-row{ margin-bottom:44px; }
  .story-row > .cell{ padding-left:16px; padding-right:16px; }
  .story-figure{ margin-bottom:20px; }
  .cta-band{ padding:28px 22px; flex-direction:column; align-items:flex-start; gap:20px; }
  .cta-band h2{ font-size:20px; }
  .cta-band .cta-action{ width:100%; }
  .cta-band .cta-action .btn{ width:100%; }
  .faq-accordion .accordion-title{ font-size:16px; padding:18px 56px 18px 18px; }
  .faq-accordion .accordion-content{ padding:0 18px 20px 18px; }
  .footer-bottom{ flex-direction:column; align-items:flex-start; }
}

@media screen and (max-width:520px){
  .banner-title{ font-size:26px; }
  .banner-card{ left:12px; bottom:12px; padding:10px 14px; min-width:150px; }
  .banner-card .value{ font-size:18px; }
  .story-h3{ font-size:18px; }
  .btn{ height:46px; padding:0 20px; font-size:14.5px; }
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}